1. says

    Re the first piece, just from the abstract: The measure of superstition the authors used is a measure of the extent to which subjects “trade in a superstitious way”. So this study doesn’t actually assess the extent to which superstition tends to affect trading behaviour. Instead it simply confirms the obvious-seeming fact that, insofar as subjects trade in a superstitious way, they lose more money as a consequence.
    The last two sentences of the abstract point to non-obvious and interesting results, though.

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